ABB 1SVR405663R0000 Electrical Protection & Circuit Control - UL 508
Part Number: 1SVR405663R0000
Quick Summary
CR-U 51B plug-in module for arc quenching provides reliable protection for ABB CR-U sockets in industrial control panels. That spark can wear contacts and trigger nuisance outages; this module minimizes arc faults and maintenance. It is certified for UL 508, CE and cURus, aligning with global safety and reliability standards. With its compact form and plug-in design, installation is fast, reducing downtime and field wiring complexity. The module also complements interface relays and spare parts, helping engineers improve machine availability and total cost of ownership. Designed for automation environments, it integrates smoothly with ABB sockets to support safer, scalable control architectures.
Product Information
Extended Description
1SVR405663R0000 ABB: The CR-U 51B plug-in module is a pluggable function module for the CR-U range sockets. This module provides arc elemination. The rated control supply voltage is 6-24 V AC/DC.
EAN
4013614529092
Minimum Order Quantity
10 piece
Customs Tariff Number
85480090
Data Sheet, Technical Information
Catalog 2024 Electronic Relays and Controls - Chapter Interface relays and optocouplers
Instructions and Manuals
2CDC117008D0204
CAD Dimensional Drawing
Information - 2D and 3D files for CAD systems
Product Net Width
34 mm
Product Net Height
24 mm
Product Net Depth / Length
9 mm
Product Net Weight
0.007 kg
Function
Accessory for interface relays CR-U
Sub-Function
Pluggable function module for universal relay sockets
Sub-Function 2
Spark quenching
Rated Control Supply Voltage (Us)
6 ... 24 V AC/DC | 6 ... 24 AC V
Output
none
Output Signal
none
Standards
CAN/CSA C22.2 No.14 | IEC/EN 63000 | IEC/EN 61984 | UL 508
Conflict Minerals Reporting Template (CMRT)
CMRT - Conflict Minerals Reporting Template
RoHS Information
EU Declaration of Conformity - CR-M, CR-P, CR-U Socket and accessories
RoHS Status
Following EU Directive 2011/65/EU
CSA Certificate
CSA Certificate – Sockets and function modules for pluggable interface relays CR-S, CR-P, CR-M, CR-U
cURus Certificate
cURus508_E244328
Declaration of Conformity - CE
EU Declaration of Conformity - CR-M, CR-P, CR-U Socket and accessories
Declaration of Conformity - UKCA
UK Declaration of Conformity - CR-M, CR-P, CR-U Socket and accessories
EAC Certificate
EAC_RU_C-DE.ME77.B.00446-19
Package Level 1 Units
bag 10 piece
Package Level 1 Width
180 mm
Package Level 1 Depth / Length
9 mm
Package Level 1 Height
220 mm
Package Level 1 Gross Weight
0.072 kg
Package Level 1 EAN
4013614374425
Object Classification Code
K
ETIM 7
EC002586 - Accessories for switching relay
ETIM 8
EC002586 - Accessories/spare parts for switching relay
ETIM 9
EC002586 - Accessories/spare parts for switching relay
eClass
V11.0 : 27371692
UNSPSC
39122331
E-Number (Finland)
2712804
E-Number (Norway)
4187503
E-Number (Sweden)
4005444
Arc quenching capability is built into the CR-U 51B, reducing sparking, contact wear, and unexpected outages; this translates to longer relay life and lower maintenance costs in harsh industrial environments. The rated control supply voltage of 6–24 V AC/DC provides flexible power compatibility with existing control circuits, decreasing installation time and wiring errors. As a pluggable module for universal relay sockets, it delivers quick swaps and straightforward upgrades, minimizing downtime during maintenance windows while maintaining consistent interface compatibility with ABB CR-U sockets and related family devices. Compliance is reinforced by UL 508, CE and UKCA, helping you meet regulatory requirements without redesigning control panels. Comprehensive documentation and CAD assets further streamline design-in, procurement, and field installation for engineering teams.
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FAQs
The CR-U 51B is a plug-in accessory designed for ABB CR-U sockets. It installs directly into compatible interface relays, requiring no complex wiring. Verify the rated control supply voltage of 6–24 V AC/DC is present in your control circuit, then insert the module into the socket without tools in many configurations. Always follow the connector orientation and ensure power is de-energized during installation.
The 51B module provides spark quenching at the relay interface, which reduces arcing between contacts, minimizes contact wear, and lowers nuisance outages. In industrial panels, this translates to longer relay life and fewer maintenance cycles, especially in high-switching environments. It is designed to complement ABB CR-U relays for reliable, repeatable operation.
Yes. The CR-U 51B is a pluggable module intended for CR-U sockets and is compatible with the broader ABB interface relay family, including CR-S, CR-P, and CR-M variants used in modular control panels. This compatibility enables scalable upgrades and easier spare parts management across multiple control blocks.
The module is certified to UL 508 and CE, with cURus recognition and UKCA documentation available. These certifications support compliance for machinery safety in many jurisdictions, reducing the need for redraft or redesign when integrating arc-quenching protection into automated systems.
By reducing arcing, wear, and downtime, the CR-U 51B lowers maintenance frequency and extends relay life, delivering lower spare parts costs and improved machine uptime. Its plug-in design reduces field service time and speeds up upgrades, contributing to faster project ROI in automation and packaging lines.